FKIE_CVE-2026-32313

Vulnerability from fkie_nvd - Published: 2026-03-16 14:19 - Updated: 2026-03-17 19:25
Severity
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Summary
xmlseclibs is a library written in PHP for working with XML Encryption and Signatures. Prior to 3.1.5, XML nodes encrypted with either aes-128-gcm, aes-192-gcm, or aes-256-gcm lack validation of the authentication tag length. An attacker can use this to brute-force an authentication tag, recover the GHASH key, and decrypt the encrypted nodes. It also allows to forge arbitrary ciphertexts without knowing the encryption key. This vulnerability is fixed in 3.1.5.
References
security-advisories@github.comhttps://github.com/robrichards/xmlseclibs/commit/03062be78178cbb5e8f605cd255dc32a14981f92Patch
security-advisories@github.comhttps://github.com/robrichards/xmlseclibs/releases/tag/3.1.5Product
security-advisories@github.comhttps://github.com/robrichards/xmlseclibs/security/advisories/GHSA-4v26-v6cg-g6f9Exploit, Vendor Advisory
Impacted products
Vendor Product Version
xmlseclibs_project xmlseclibs *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:xmlseclibs_project:xmlseclibs:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "430BF09C-4127-4E88-B410-360059F4A814",
              "versionEndExcluding": "3.1.5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "xmlseclibs is a library written in PHP for working with XML Encryption and Signatures. Prior to 3.1.5, XML nodes encrypted with either aes-128-gcm, aes-192-gcm, or aes-256-gcm lack validation of the authentication tag length. An attacker can use this to brute-force an authentication tag, recover the GHASH key, and decrypt the encrypted nodes. It also allows to forge arbitrary ciphertexts without knowing the encryption key. This vulnerability is fixed in 3.1.5."
    },
    {
      "lang": "es",
      "value": "xmlseclibs es una biblioteca escrita en PHP para trabajar con Cifrado y Firmas XML. Antes de la versi\u00f3n 3.1.5, los nodos XML cifrados con aes-128-gcm, aes-192-gcm o aes-256-gcm carecen de validaci\u00f3n de la longitud de la etiqueta de autenticaci\u00f3n. Un atacante puede usar esto para forzar por fuerza bruta una etiqueta de autenticaci\u00f3n, recuperar la clave GHASH y descifrar los nodos cifrados. Tambi\u00e9n permite falsificar textos cifrados arbitrarios sin conocer la clave de cifrado. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 3.1.5."
    }
  ],
  "id": "CVE-2026-32313",
  "lastModified": "2026-03-17T19:25:41.563",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-16T14:19:33.837",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/robrichards/xmlseclibs/commit/03062be78178cbb5e8f605cd255dc32a14981f92"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product"
      ],
      "url": "https://github.com/robrichards/xmlseclibs/releases/tag/3.1.5"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/robrichards/xmlseclibs/security/advisories/GHSA-4v26-v6cg-g6f9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-354"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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